as the bleed valve bleeds off the air it will allow higher boost before it opens, with a strong actuator you run the risk of it getting stuck more due to tension and also theres no real controled boost either

if it was just that cut and dry why would you use air injectors/boost controlers/amal valves or even bleed valves ?

also theres only soo far the tension can set the boost and you can get uncontrolable spikes

this is just what i found playing with amal valve jets so it could be all wrong


the amal valve pulses to regulate the boost from the ecu, it dont just open and and shut when too much boost is there hence why there soo good compared to a bleed valve

i belive that matt has a bleed valve and a amal valve to help his 400bhp conversion ratehr than air injectors but his car was set up by a bloke who knows his mustard